What material is typically used for roof sheathing?

The material most commonly used for roof sheathing is wood boards. This is primarily due to the strength and stability that wood provides, making it an ideal choice for supporting roofing materials. Wood boards help to create a solid, flat surface onto which other roofing materials can be applied, such as shingles or metal roofing. Additionally, wood can be easily cut and shaped to fit various roof designs and structural requirements.

While metal and plastic may have uses in roofing applications, they are not typically employed as sheathing materials. Glass, similarly, lacks the structural integrity needed to serve as a base for roofing systems. Therefore, wood boards remain the standard for roof sheathing in construction, owing to their durability, availability, and cost-effectiveness.